To be quite honest, I would be surprised if you weren’t already well aware of this style, much less already own at least one. But if not — here is your absolute sign to snag one up. The Knit Polo, or sweater polo as it will be called this fall lol, is a style that has been every where this year. This celeb endorsed style gives an appropriate level of casualness without feeling like you should be on a golf course as many other polos do. Plus is allows for a break from the other short sleeve styles that have been in your closet for a few years.
Personally, my favorites that I have picked up of this style are from Percival (Chris Evans and Ryan Reynolds approved), but you can find them just about everywhere right now at a range of price points. Keep in mind that with all knits, the quality, hand, and weight of the fabric will all come into play with cost, but the look itself is easily replicable at pretty much all budgets.